Directed Electronics 450.5 User manual

Brand: Directed Electronics

Model: 450.5

Category: Audio amplifiers

Type: User manual

This manual is also suitable for

Viper Audio 450.5

model

450.5

TABLE OF CONTENTS

CONGRATULATIONS

Congratulations for choosing a Viper

Audio power amplifier from Directed

Electronics, the industry leader in high

quality automotive security and audio

equipment since 1990.

With the introduction of Viper Audio

power amplifiers, Directed Electronics

continues to set new standards of

performance, reliability, and affordability

in the mobile electronics industry.

Featuring high-efficiency MOSFET power

supplies, flexible on-board crossovers,

and state of the art audio design, Viper

Audio power amplifiers will excite and

delight the mobile sound enthusiast with

years of high-quality audio reproduction.

Viper Audio power amplifiers come with

a two-year limited warranty if installed

by an authorized Viper dealer. If not

installed by an authorized dealer, Viper

Audio power amplifiers are covered by a

one-year, parts-and-labor limited

warranty.

Be sure to retain your original sales

receipt and refer to the warranty section

of this guide for full details about your

coverage.

Limited Two-Year Consumer Warranty . . . . . . . . . . . . . . . . . . . . . . . . .3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Wire Connector Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Front Panel Connections/Status LED . . . . . . . . . . . . . . . . . . . . . . . . . .7

Rear Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Top Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Top Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Speaker Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Crossover Settings and Gain Adjustment . . . . . . . . . . . . . . . . . . . . . . .12

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Directed Electronics, Inc. promises to the

original purchaser, to replace this product

should it prove to be defective in workman-

ship or material under normal use, for a

period of two years from the date of

purchase by the dealer as indicated by the

date code marking of the product

PROVIDED the product was installed by an

authorized Directed dealer. During this two -

year period, there will be no charge for this

replacement PROVIDED the unit is returned

to Directed, shipping pre-paid. If the unit is

installed by anyone other than an autho-

rized Directed dealer, the warranty period

will be one year from the date of purchase

by the dealer as indicated by the date code

marking of the product. During this one-year

period there will be no charge for this

replacement PROVIDED the unit is returned

to Directed, shipping pre-paid. This warranty

is non-transferable and does not apply to

any unit that has been modified or used in a

manner contrary to its intended purpose,

and does not cover damage to the unit

caused by installation or removal of the unit.

This warranty is void if the product has been

damaged by accident or unreasonable use,

neglect, improper service or other causes

not arising out of defects in materials or

construction. ALL WARRANTIES INCLUDING

BUT NOT LIMITED TO EXPRESS

WARRANTY, IMPLIED WARRANTY,

WARRANTY OF MERCHANTABILITY,

FITNESS FOR PARTICULAR PURPOSE, AND

WARRANTY OF NON-INFRINGEMENT OF

INTELLECTUAL PROPERTY ARE EXPRESSLY

EXCLUDED TO THE MAXIMUM EXTENT

ALLOWED BY LAW, AND DIRECTED

NEITHER ASSUMES NOR AUTHORIZES

ANY PERSON TO ASSUME FOR IT ANY

LIABILITY IN CONNECTION WITH THE

SALE OF THE PRODUCT. DIRECTED HAS

ABSOLUTELY NO LIABILITY FOR ANY AND

ALL ACTS OF THIRD PARTIES INCLUDING

ITS AUTHORIZED DEALERS OR

INSTALLERS. Unit must be returned to

Directed, postage pre-paid, with: consumer’s

name, telephone number, and address,

authorized dealer’s name and address, and

product description. IN ORDER FOR THIS

WARRANTY TO BE VALID, YOUR UNIT

MUST BE SHIPPED WITH PROOF OF

INSTALLATION BY AN AUTHORIZED

DIRECTED DEALER. ALL UNITS RECEIVED

BY DIRECTED FOR WARRANTY REPAIR

WITHOUT PROOF OF DIRECTED DEALER

INSTALLATION WILL BE COVERED BY THE

LIMITED ONE-YEAR PARTS AND LABOR

WARRANTY. Note: This warranty does not

cover labor costs for the removal and rein-

stallation of the unit. BY PURCHASING THIS

PRODUCT, THE CONSUMER AGREES AND

CONSENTS THAT ALL DISPUTES BETWEEN

THE CONSUMER AND Directed SHALL BE

RESOLVED IN ACCORDANCE WITH CALI-

FORNIA LAWS IN SAN DIEGO COUNTY,

CALIFORNIA.

LIMITED TWO-YEAR CONSUMER WARRANTY

High-powered car audio

systems may produce sound

pressure levels that exceed the

threshold at which hearing loss may

result.

They may also impair a driver’s ability to

hear traffic sounds or emergency vehi-

cles. Use common sense and practice

safe listening habits when listening to or

adjusting your audio system.

WARNING

FEATURES

Dual high-speed MOSFET switching

power supplies.

Complimentary bipolar outputs (ch

1-4), and high-current MOSFET

outputs (sub channel).

Five channel expandable architec-

ture supports single or multiple amp

system designs.

Thermal, DC offset, reverse polarity,

and short circuit protection with

status LED.

Top-mounted controls located under

illuminated Viper snake logo trim

piece.

Variable 24 dB/octave subsonic

filter and phase adjustment (sub

channel).

Remote subwoofer level control and

variable 12 dB bass EQ function.

Two, four, and six channel input

allows full access to source or

processor output functions.

Summed stereo full-range RCA

output jacks.

Gold-plated screw-block plugs and

RCA jacks ensure maximum signal

transfer.

Rugged one-piece extruded heat

sink finished with injection-molded

mounting feet.

INSTALLATION GUIDELINES

1. Please read this owner’s manual

carefully before installing this ampli-

fier.

2. Disconnect the battery ground

terminal prior to making any elec-

trical connections.

3. Check for any hazards or obstruc-

tions such as gas tanks, fuel or

brake lines, and wiring harnesses

before mounting the amplifier.

4. Pick a mounting location that will

provide adequate access and venti-

lation and protect the amplifier

from heat, moisture, and dirt.

5. Avoid sharp metal areas when

routing cables to the amplifier, and

run RCA cables away from the

power cables and other potentially

noisy car harnesses.

6. The amplifier should be grounded

with a short, heavy gauge wire

connected directly to the car at a

bare metal surface, preferably

scraped body sheet metal. Do not

use factory ground locations, seat

bolts, or brackets that are

spotwelded.

7. Always fuse your power connection

within eight to ten inches of the

battery terminal. Use a fuse or

circuit breaker rated slightly more

than the on-board fuse(s) of the

amplifier(s). The gauge of power

wire used should take into account

the total current draw of the

system, and the length of wire

used. IASCA and other auto sound

competition organizations have

charts available for this; you can

also find a chart in the MECP study

guide. Minimum wire gauge recom-

mendations for the individual ampli-

fiers are listed on the specification

page. Always use the same gauge

wire for the amplifier ground that

you use for the power wire. Be sure

to examine the battery ground

cable of the vehicle, and if neces-

sary, upgrade it by adding an addi-

tional ground wire that is the same

gauge as the amplifier’s power

wire. Remember, the amplifier can

only deliver its rated output when it

is not current limited by the power

and ground supply wires.

8. This amplifier is designed to drive a

speaker load that measures from 2

to 8 ohms (sub channel, 2 to 4

ohms). Keep in mind that heat is

the long-term enemy of automotive

electronics and the lower your

speaker load, the more heat is

generated. For low impedance

speaker applications or restricted

ventilation installations, an external

cooling fan may be advisable.

9. Battery and ground connections to

the vehicle should be made with

crimped ring terminals of the appro-

priate size (surface area is what

counts); soldering the terminals

after crimping is also recom-

mended.

10. Due to the high-frequency MOSFET

switching power supply, filtering the

power cable is not generally

required (remember that the amp

can’t deliver full output if the power

supply is restricted). Proper

grounding of the signal source is

mandatory for the amplifier to

reach its performance peak. If the

RCA inputs are not grounded

adequately via the signal source,

electrical noise from the vehicle

may be picked up in the system.

Power and speaker wire connections on

Viper Audio power amplifiers are

performed with the use of specially

designed connectors that allow for ease

of wire termination and installation

convenience.

Poor connections are a common cause

of poor sound quality or amplifier perfor-

mance. Making proper wire connections

is paramount to a reliable, quality sound

system.

Please follow these recommendations to

ensure a problem free installation:

1. Always use the proper gauge wire

for the connector.

2. Cut wires to the minimum length

necessary.

3. Trim the wire ends so bare wire

does not protrude from the

connector after termination.

4. Always tighten the connector

screws firmly at least twice, once

during installation and once more

before returning the car to the

customer.

CCAAUUTTIIOONN::Over tightening the screws can cause them to strip,

creating loose connections. Tighten the screws

twice firmly for a permanent, solid connection.

NNOOTTEE::The speaker connectors are designated on stereo

amplifiers so 1 = Left and 2 = Right. Mono

amplifers are designated so 1 = Speaker 1 and

2 = Speaker 2. For more details regarding mono

applications, please refer to the

Speaker Wiring

Diagrams

section of this guide.

WIRE CONNECTOR PLUGS

1. RRCCAA IInnppuutt JJaacckkss -- Accepts line level

outputs from head units or signal

processors between 150mV and 8

volts.

2. RRCCAA SSuubb IInnppuutt JJaacckkss- Accepts line

level outputs from head units or

signal processors between 150mV

and 8 volts for the subwoofer

section of the amplifier.

3. RRCCAA OOuuttppuutt JJaacckkss -- These pass

through RCA jacks can be used to

send a signal to a second amplifier. It

is the summed stereo output of the

channels 1-4 inputs of the amplifier.

4. SSttaattuuss LLEEDD- Lights GREEN to indi-

cate the amplifier is on and oper-

ating normally. Shuts off to indicate

thermal shutdown or short circuit

condition for channels 1-4.

5. PPrrootteeccttiioonn LLEEDD- Lights RED to indi-

cate the amplifier is in protection

mode due to short circuit or DC

offset.

6. RReemmoottee SSuubb LLeevveell CCoonnttrrooll - Controls

the subwoofer amplifier gain

controls from a remote location for

ease of adjustment during listening.

WWaarrnniinngg::DO NOT connect a level control knob from

other manufacturers to the Remote Sub Level Control of

any Directed amplifier. Even though the connectors fit

properly, the control knob and connector pin positions

may be different and the amplifier will be damaged.

FRONT PANEL CONNECTIONS/STATUS LED

FIGURE 1—AMPLIFIER CONNECTIONS 1100.5 FRONT

146

FIGURE 2—AMPLIFIER CONNECTIONS 450.5 REAR

1. RReemmoottee TTuurrnn OOnn- This terminal

turns on the amplifier when (+) 12

volt is applied to it. Connect it to

the remote turn on lead of the head

unit or signal source. If a (+) 12

volt remote turn on lead is not

available, Remote Power Adapter

(P/N #55000) can be used to

supply a remote turn on signal. DO

NOT connect this terminal to

constant (+) 12 volt.

2. SSppeeaakkeerr OOuutt TTeerrmmiinnaallss- Connect

the speakers to these terminals.

(Refer to the

Speaker Wiring

Diagrams

section of this guide.)

3. SSuubb OOuutt TTeerrmmiinnaallss- Connect

subwoofers to these terminals.

(Refer to the

Speaker Wiring

Diagrams

section of this guide.)

4. PPoowweerr FFuusseess -- These fuses protect

the amplifier against internal elec-

trical damage and are meant to

protect the amplifier only. All other

power connections should be fused

at the source.

5. ((++)) 1122 VVoolltt PPoowweerr- Connect this

terminal through a FUSE or CIRCUIT

BREAKER to the positive terminal of

the vehicle battery or the positive

terminal of an isolated audio

system battery.

WWAARRNNIINNGG::Always protect this power wire by installing a fuse

or circuit breaker of the appropriate size within 12

inches of the battery terminal connection.

6. GGrroouunndd --Connect this terminal

directly to the sheet metal chassis

of the vehicle, using the shortest

wire necessary to make this

connection. Always use wire of the

same gauge or larger than the (+)

12 volt power wire. The chassis

connection point should be scraped

free of paint and dirt. Use only

quality crimped and/or soldered

connectors at both ends of this

wire. DO NOT connect this terminal

directly to the vehicle battery

ground terminal or any other

factory ground points.

REAR PANEL CONNECTIONS

TOP PANEL CONTROLS

1. IInnppuutt GGaaiinn AAddjjuussttmmeennttss- Control

amplifier sensitivity and are used to

match the input level of the ampli-

fier to the output level of the signal

source.

2. CCrroossssoovveerr SSeelleeccttiioonn SSwwiittcchh-

Controls the type of filter for the on-

board active crossovers. FLAT does

not attenuate any frequencies and is

for full-range speaker systems. HPF

attenuates low frequencies and is

used for mid-range speakers and

tweeters. LPF attenuates high

frequencies and is used for

subwoofers.

3. CCrroossssoovveerr FFrreeqquueennccyy AAddjjuussttmmeenntt-

Adjusts the crossover point for the

on-board active crossovers.

4. SSuubb PPhhaassee SSwwiittcchh- Changes the

phase of the subwoofer speaker

output by 180 degrees

5. VVaarriiaabbllee BBaassss EEQQ- Controls up to 12

dB bass boost to the subwoofer

output.

6. SSuubb IInnppuutt SSwwiittcchh- Controls where

the subwoofer section of the ampli-

fier gets its signal. If the SUB INPUT

switch is in the ON position the

subwoofer section of the amplifier

will get its signal internally summed

from the channels one through four

RCA jacks, and the SUB RCA jacks

do not need input. If in the OFF

position the SUB RCA jacks must

have input.

7. IInnppuutt PPaarraalllleell SSwwiittcchh- Controls the

input signal to the indicated chan-

nels. If the 3+4 switch is ON, chan-

nels three and four will derive their

signal from channels one and two

RCA jacks and no input is needed. If

the 3+4 switch is OFF, channels

three and four RCA jacks must have

input.

FIGURE 3—AMPLIFIER CONTROLS TOP

Control Panel Cover

The amplifier’s gain and filter controls

are mounted under the elliptical control

panel cover. Magnets hold the cover

snugly and allow easy access.

TToo iinnssttaallll tthhee ccoovveerr- Place the

straight end of the control panel

cover into the notched end of the

amplifier’s top panel while

elevating the curved end. Lower the

curved end of the cover until the

magnets make contact.

TToo rreemmoovvee tthhee ccoovveerr - Place a finger

on the curved end of the cover

while lifting up the straight end

with your thumb. When the

magnets lose contact, lift and

remove the cover.

Illuminated Window

Alignment

The illuminated window comes attached

to the control panel cover with a light

adhesive tape. An additional supply of

precut adhesive tape is included in the

hardware pack.

1. Firmly hold the control panel cover

while gently pressing against the

window from the top. If the

window will not release easily use a

small flat tool to pry it loose. Pry

slowly and evenly from several

points to avoid deforming or

cracking the window.

2. Apply two of the precut pieces of

adhesive tape to the corners of the

window that don't have tape. Make

sure to apply the tape to the side

that makes contact with the cover.

Save the other two precut pieces of

tape for future use.

3. Turn the illuminated window so the

Viper snake logo will be in an

upright position when the cover is

re-attached to the amplifier. Press

the window onto the underside of

the control panel cover using the

positioning pins for alignment.

Viper Badge Mounting

The Viper Badge can be rotated in 90-

degree increments to accommodate the

amplifier’s final mounting position.

1. Determine the final mounting posi-

tion of the amplifier.

2. Determine the position required for

the badge to be viewed horizontally.

3. Remove the protective cover for the

adhesive tape on the under side of

the badge.

4. Align the badge guideposts with the

holes in the amplifier top panel.

5. Press down firmly until the logo is

securely attached to the amplifier.

TOP PANEL FEATURES

SPEAKER WIRING DIAGRAMS

Five channel operation (bottom view)

Three channel operation (bottom view)

NNOOTTEE::The dual + and -- subout terminals of the 1100.5 are paralleled internally and the combined load impedance should be taken

into consideration when connecting multiple subwoofers.

Your Viper Audio power amplifier needs to be adjusted carefully to achieve maximum

performance. These are some guidelines to follow when fine-tuning the amplifier.

For normal complete system application, the crossover selection switches should be

set to HPF.

The crossover frequency control needs to be adjusted to suit your particular system.

For subwoofer applications, try to keep the setting low enough to prevent the

image smearing (you should not be able to hear male voices from the subwoofer)

but not so low as to create a gap between the subwoofer and the mid-

bass/midrange speakers. For mid-bass/midrange settings, try to keep the setting

low enough to keep your sound stage in front of you, without overdriving the

speaker. It will be to your advantage to spend some extra time with this adjust-

ment, listening to familiar music or system set-up discs to achieve the kind of

musical reproduction that you prefer.

The gain adjustment allows you to set proper signal match for clean, quiet ampli-

fier operation. For full-range and simultaneous stereo/mono bass applications,

start by playing some music you are familiar with. With the gain adjustment on

the amplifier in the middle of its rotation, bring up the volume on your head unit

to the 3/4 volume setting or until you start to hear distortion or clipping. If you

hear distortion before you reach the 3/4 volume setting of your head unit, reduce

the gain setting on the amplifier and start to raise the head unit volume again.

When you can listen to the music at or slightly above 3/4 on your head unit

without audible distortion, slowly raise the gain of the amplifier until distortion is

heard, then back off the gain until the distortion is not audible. This setting will

allow you to reach full output with all but the quietest of source material, while

avoiding excessive noise in the system.

For systems using the Remote Sub Level Adjustment, increase the subwoofer gain

on the amplifier by 25% and set the Remote Sub Level knob to the center position

after making all system gain and filter adjustments. This will give the Remote Sub

Level Control a wider range of adjustment to the subwoofer output.

The same procedure should be used for adjusting the amplifier when the on-board

crossover is set to LPF or HPF, but you will also have to take into consideration the

effect that gain adjustment has on system frequency response and imaging.

Again, plan on spending some time with music that you know, getting the gain

and crossover settings the way you like. Test discs and analyzers may help with this

process, but in the end it's your ears that count - listen to the music!

CROSSOVER SETTINGS AND GAIN ADJUSTMENT

SPECIFICATIONS

RMS continuous power per channel, Channels 1-4 driven into

4 ohms from 20 to 20,000 Hz, with less than 0.08% total

Harmonic Distortion @ 14.4 VDC. Channel 5 driven into 4

ohms from 20-250 Hz, with less than 0.4% THD @ 14.4 VDC.

RMS continuous power per channel, Channels 1-4 driven into

2 ohms from 20 to 20,000 Hz, with less than 0.1% Total

Harmonic Distortion @ 14.4 VDC. Channel 5 driven into 2

ohms from 20-250 Hz, with less than 0.6% THD @ 14.4 VDC.

RMS continuous power, 3-channel operation, channels 1-4

bridged into 4 ohms from 20 to 20,000 Hz, with less than

0.1% Total Harmonic Distortion @ 14.4 VDC. Channel 5 driven

into 1 ohms from 20-250 Hz, with less than 0.6% THD @

14.4 VDC.

DDyynnaammiicc ppoowweerr rraattiinngg(IHF 202 standard) at minimum load

Viper model 450.5 Ch 1-4 Ch 5

35 150

watts watts

50 250

watts watts

100x2 250

watts watts

Signal-to-Noise Ratio Greater than 95 dB (Ch 1-4),

80dB (sub)

Frequency Response 20-20,000 Hz ± 0.5 dB

(Ch 1-4)

Damping Factor @ 4 ohm Greater than 100 (Ch 1-4),

50 (sub)

Crossover (Ch 1-4) Switchable high or low pass

12 dB/octave, continuously

variable 50 to 500 Hz

Subwoofer Crossover Low pass 12 dB/octave,

variable 30 to 250Hz

Bass Equalization Variable, 0 to 12 dB,

centered at 45Hz

Input Impedance 20K ohms

Input Sensitivity Variable from 150 mV to

8 volt

Output Impedance (ch 1-4) 2 to 8 ohms, stereo

4 to 8 ohms, bridged

(ch 5) 2 to 4 ohms

Supply Voltage 10 to 16 VDC

Fusing and Power 25A X 2

Minimum Cable Requirements (AWG) #4

(Per amp, trunk mounted)

600

watts

The company behind this system is Directed Electronics, Inc.

Since its inception, Directed has had one purpose, to provide customers with the

finest vehicle security, car stereo products, rear seat entertainment, and accessories

available. The recipient of more than 20 patents in the field of advanced electronic

technology, Directed is ISO 9001 registered.

Directed® is committed to delivering world-class quality

products and services that excite and delight our customers.

Directed Electronics, Inc.

Vista, California 92083

www.directed.com

Directed is a proud member of

Quality Directed products are sold and serviced throughout North America and around the world

Call 800 274 0200 for more information about our products and services

Directed Electronics 450.5 User manual

Brand: Directed Electronics

Model: 450.5

Category: Audio amplifiers

Type: User manual

This manual is also suitable for

Viper Audio 450.5

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Directed Electronics 450.5 User manual

This manual is also suitable for

Directed Electronics 450.5 User manual

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